Heat convector



Sept. 19, 1933. R. s. WENTVIORTH HEAT GONVEG'TOR Filed March 25, 1932 2 Sheets-Sheet l p 1933- R. s. WENTWORTH HEAT CONVECTOR Filed March 25, 1932 2 Sheets-Sheet 2 I INVENT R W x/ UNITED STATES PATENT OFFICE HEAT CONVECTOR Robert S.

to National Ra Wentworth, Johnstown,

diator Corporation,

Pa., assignor J ohnstown,

Pa., a corporation of Delaware Application March 25, 1932.

This invention relates serau No. 601,193

8 Claims. (01. 257-136) to a space or room heater, and more particularly to that type of indirect heater known to the or convector radiator.

art as a convector The invention constitutes an improvement on radiators of the type disclosed in my copending No. 513,883, filed February No. 514,164, filed February matured into Patent No. vember 22, 1932.

In the application applications, Serial 6, 1931, and Serial '7, 1931, which has 1,888,545, issued Nofirst mentioned above I have fully disclosed the desirability of providing a convector which is set at an angle within a cabinet, the convector being provided with sloping fins to provide a plurality of relatively short air passages from the lower side vector to the upper side.

of the inclined con- Briefly stated, this arrangement provides for a relatively large prime heating surface with a relatively large extended heating surface in the form of radiating fins plus the advantage of relatively short nearly vertical air fiues from one to the other.

The present invention is in this type of section face of the convector for an improvement according to which a relatively large prime heating area is provided plus a relatively large extended area, but wherein the air circulating passages through the convector are more open, allowing a more free circulation of air, but wherein the circulation of air through the convector is broken up heating of all of the air.

to assure fairly even In my said application Serial No. 514,164 I have shown one means of doing this according to through which the heating which the barrels fluid flows are provided with fins which are staggered.

The invention may be readily understood by reference to the accompanying drawings in which Figure 1 represents a transverse vertical section through a convector made in accordance with this line II-II of Figure 1;

Figure 3 is a view similar to Figure 1 of a slightly modified form Figure 4 is a View similar of section;

to Figure 2, these:-

tion being in the plane of line IV-IV of Figure 3;

and

Figure 5 is a front elevation on a smaller scale of the convector assembly as shown in Fig. 1, but

without the casing.

Referring first to the construction shownin Figures 1 and 2, the convector is comprised of a opposite to the fin of plurality of sections 2, each section having a header portion 3 at the upper end thereof and a header portion 4 at the lower end thereof.

The headers 3 and 4 are connected by a barrel portion 5. The barrel 5 is positioned to one side or the other of the center line through the centers of the header portions 3. In Figure 1 this center'line is designated A and the one barrel 5 which is shown in section is located to one side of this center line, while the barrel 5 of the 5 next adjacent section is on the other side of this center. In order to provide for this offsetting of the barrels, the barrels have curved portions 6 opening into the headers 3.

Each barrel is provided with a plurality of heat .1

tends in one direction to the full width of the In other words, the barrels 5 arelocated to one side of the center of the fin and since the sections are alternated the fins '7 of one section extend parallel with but in a direction the next adjacent section. 80.. This is clearly shown in Figure 2 where the staggering of the barrels 5 and the reversal of the fins '7 is-clearly apparent.

The sections of the convector are identically the same and the staggered relation of the barrels and finsis brought about merely by the reversal or turning upsidedown of every other section in the assembly. Since the header portions 3 are all on a common center, and the header portions 4 are likewise on a common center, the headers line up and can be connected by push nipples in accordance with the practice now common in the radiator art.

The convector when it is installed is set in a cabinet or flue B. This may be a cabinet built directly into a wall or, may be a metal housing setting out in the room. The bottom of the cabinet or floor line is designated 1), the back of the cabinet is b and the top is W. The front of the cabinet is designated 5 At the bottom of the cabinet below the front cabinet b is an air inlet opening b and at the top of the cabinet is an opening 12 It will be understood that the cabinet is only conventionally'outlined for the .purpose of illustration. The'convector is inclined at an angleacross the space 19 so that the air coming into the bottom of the cabinet through the opening b travels upalong the bottom side of the convector, passing through the space between the fins 7 and flowing around the columns or convector.

er flow of air per barrels 5. The general flow of the air is indicated by the arrows.

The flow of air is established and maintained entirely by convection. The eificiency of the radiator is increased according to the velocity at which the air flows over the surface thereof. The faster the air flow, the faster the transfer of heat from the fluid within the radiator to the air.

The advantage of the present invention resides in the fact that the staggering of the columns gives a relatively unobstructed air flow with the result that the volume and velocity of air is increased and the efficiency of the convector increased over that type of convector wherein the barrels all lie in the same plane. The reason for this may be seen from an inspection of Figure 2.

Assuming that the air is fiowing in the direction of the arrows, this representing the lower side of the convector, the space between the center of one column 5 on the lower side of the convector and the next adjacent column 5 on the same side is equal to a width of two sections, and the distance between the lower columns 5 and the upper columns 5 is greater than the distance between sections. For the purpose of illustration I have shown in dotted lines in Figure 2 at 5 the position which an upper column 5 would occupy if the section were reversed, so that all of the columns would be in the same vertical plane and from this it will be seen that the distance between the columns of adjacent sections designated by the measurement :r is much greater than the distance designated by the dimension y which is the dimension of the distance between columns when an upper column is projected down to the dotted line position 5.

' From this it will be seen that while the projected area of the columns is the same; the disposition of the columns is the same 'as if all of the sections were in the same plane; and the staggering of the columns gives an actually greater free air passage through the convector. This freedom of air circulation, allowing a greatminute per unit of area, counteracts the decreased efiiciency of the fins 7 by reason of the fact that the columns are not positioned at the centers of the fins. In other words the efficiency of the fins or any extended area decreases away from the prime surface and therefore. the greatest efficiency for the projected area obtains when the prime surface is at the centerof the extended area, and with the present invention some efiiciency for the ex tended area positioning of the columns 5 with respect thereto. As stated above, however, this loss in the efiiciency of the extended surface is greatly offset by the greater freedom of flow of air which is eifec'ted by the staggering of the columns.

The arrangement shown in Figures 3 and 4 section having a column which is elliptical in cross-section instead thereof connecting the straight portion of the column with the header and each of the columns is lost by reason of the one-sided is actually greater than the space between the projected dimensions of the columns.

By reason of the offsetting of the columns with respect to the headers, as herein described, the invention has the commercial advantage that all of the sections are the same and the staggering is obtained merely by reversal of the sections. This eliminates the requirement for separate patterns as would be required if all of the sections were not the same. It also simplifies the replacement of sections in that a standard section can be used in either direction.

The claims to an inclined sloping fin convector are contained in my said first-mentioned application and the present application is confined to the alternating arrangement of the columns.

While I have shown and described certain preferred embodiments of my invention, it will be understood that various changes and modifications may be made therein within the scope of the following claims.

I claim:

1. A section for a convector comprising upper and lower header portions and a barrel portion connecting the header portions and positioned to one side of the center line between the header portions, and a series of fins on the barrel extending in a direction opposite to that from which the barrel is offset.

2. A section for a convector comprising upper and lower header portions, a single barrel portion connecting the header portions and positioned to one side of a center line passing between the two header portions, said barrel having curved end portions opening into the header portion, and heat radiating fins on the barrel portions set at an angle to the transverse and longitudinal axes thereof and projecting to a greater extent from one side of the barrel than from the other side.

3. A convector comprising a plurality of parallel barrel portions alternately positioned on opposite sides of a common center, and heat radiating fins on the barrels, the fins on alternate barrels extending in opposite direction but lying in parallel planes.

4. A convector comprising a plurality of parallel barrel portions-alternately positioned on opposite sides of a common center, and heat radiating fins on the barrels, the fins on the alternate barrels extending in opposite directions but lying in parallel planes, all of said fins being inclined with respect to the transverse and horizontal axes of the barrel portions.

5. A convector having a header portion at the top thereof, and a header portion at the bottom thereof and having a plurality of barrels connecting the respective header portions, said barrels being alternately disposed on opposite sides of a center line passing through the header portions thereof, the alternate barrels having oppositely extending fins thereon.

6. A convector having a header portion at the top thereof, and a header portion at the bottom thereof and having a plurality of barrelsconmeeting the respective header portions, saidbar rels being alternately disposed on opposite sides of a center line passing through the header portions thereof, the alternate barrels having oppositely extending fins thereon, the convector being formed of a plurality of like sections with the alternate sections reversed with respect to one another.

7. A convector having upper and lower header portions connected by a plurality of staggered barrels, said barrels supporting heat radiating fins in which they are eccentrically positioned, said fins being inclined with respect to the horizontal and longitudinal axes of the barrels, the convector being set with its longitudinal axis at an angle to a vertical plane.

ROBERT S. WENTWORTH. 

